Softonic\GraphQL\ResponseBuilder

Complexity

Total Complexity

9

Size/Duplication

Total Lines	62
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	getNormalizedResponse()	0	21	4
A	getJsonDecodedResponse()	0	13	2
A	build()	0	16	2

<?php

namespace Softonic\GraphQL;

use Psr\Http\Message\ResponseInterface;

class ResponseBuilder
{
    private $dataObjectBuilder;

    public function __construct(DataObjectBuilder $dataObjectBuilder = null)
    {
        $this->dataObjectBuilder = $dataObjectBuilder;
    }

    public function build(ResponseInterface $httpResponse)
    {
        $body = $httpResponse->getBody();

        $normalizedResponse = $this->getNormalizedResponse($body);

        $dataObject = array_key_exists('dataObject', $normalizedResponse)
            ? $normalizedResponse['dataObject']
            : [];

        return new Response(
            $normalizedResponse['data'],
            $normalizedResponse['errors'],
            $dataObject
        );
    }

    private function getNormalizedResponse(string $body)
    {
        $decodedResponse = $this->getJsonDecodedResponse($body);

        if (false === array_key_exists('data', $decodedResponse) && empty($decodedResponse['errors'])) {
            throw new \UnexpectedValueException(
                'Invalid GraphQL JSON response. Response body: ' . json_encode($decodedResponse)
            );
        }

        $result = [
            'data'   => $decodedResponse['data'] ?? [],
            'errors' => $decodedResponse['errors'] ?? [],
        ];

        if (!is_null($this->dataObjectBuilder)) {
            $result['dataObject'] = $this->dataObjectBuilder->buildQuery($decodedResponse['data'] ?? []);
        }

        return $result;
    }

    private function getJsonDecodedResponse(string $body)
    {
        $response = json_decode($body, true);

        $error = json_last_error();
        if (JSON_ERROR_NONE !== $error) {
            throw new \UnexpectedValueException(
                'Invalid JSON response. Response body: ' . $body
            );
        }

        return $response;
    }
}